54L series MOVs by Guiyang High-Tech Yige Electronic — the largest disc format in the range. One DC model, 54LK911 (varistor voltage 910 V), is UL 1449 Recognized under File E335803; full ratings data is available on request.
The 54L series is built on the largest varistor discs in the Flyboat range (54 mm class), for high-energy surge positions in DC power systems — photovoltaic plants, DC distribution and energy storage. Unlike the other series, 54L is not published with a full catalog ratings table; data for individual grades is available on request. In North America, the series is supported by Flyboat Electronic LLC, the factory’s sales and engineering center in Bellevue, WA.
One 54L model is UL 1449 Recognized under File E335803, per the UL Product iQ record (category VZCA2.E335803): 54LK911 — in its plain and -U variants — is recognized in DC-rated form, with a varistor voltage of 910 V. No AC-rated 54L models are covered by the file.
| Model | 54LK911 (incl. 54LK911-U) |
|---|---|
| Varistor voltage | 910 V (model code 911) |
| Rating | DC |
| UL status | UL 1449 Recognized, File E335803 (UL Product iQ record VZCA2.E335803) |
| AC models | None recognized |
For series not yet UL recognized, we can pursue UL certification for your program.
The 54L series is not published with a full catalog ratings table. Ratings data, dimension drawings and samples for 54LK911 and other 54L grades are available on request. For design-in support: North America — Thomas Dong, Flyboat Electronic LLC; China — Colin Fei. See the Contact page or the buyer FAQ.
One boundary worth stating plainly: these are bare MOV components with no integrated thermal protection, and they are not drop-in replacements for thermally protected TMOV devices. Disconnection belongs to the SPD design; where a design calls for it at the device level, we supply protection modules with built-in disconnectors — see Products.
